Running Kubernetes on Workstation, Edge, and IoT Devices

When it comes to running Kubernetes in resource constraint environments like your local developer workstation or edge and IoT devices a full-blown Kubernetes distribution is definitely not the right choice. Instead a new breed of super lightweight, certified Kubernetes distributions that (often) come as a single-binary are suited a lot better. In this session we will have a closer look at two popular choices: MicroK8s and K3s.

We will briefly cover their basic features and then put both of them to the test: locally, on a NUC powered Cloudkoffer and a few Raspi's. This talk will be mostly hands on, it shows that as a developer you do not need a PhD in clusterology to install and run Kubernetes.

Transcript

1. Lightweight Kubernetes Running Kubernetes on Workstations, Edge and IoT Devices @LeanderReimer @qaware #CloudNativeNerd
2. Mario-Leander Reimer Chief Software Architect @LeanderReimer #cloudnativenerd #qaware
3. // Cloud Native Summit Fall 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware Installing K8s in the Cloud is relatively easy. 3 Cloud / Data Center Cloud Layer $ eksctl create cluster -n eks-demo -f cluster.yml $ aksctl create cluster --name aks-demo -file cluster.yaml $ gcloud container cluster create gee-demo
4. // Cloud Native Summit Fall 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware Installing K8s on Fog, Edge and IoT is not so easy. 4 Cloud / Data Center Fog Nodes Devices Gateways Cloud Layer Fog Layer Edge Layer
5. // Cloud Native Summit Fall 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware 5 Do you have a PhD in Kubernetes clusterology?
6. // Cloud Native Summit Fall 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware • CentOS 7.7 with Containerd • Kubernetes 1.16 with K8s Dashboard • Calico, External-DNS • MetalLB + NGINX-Ingress • Rook CephFS • Cert-Manager, Sealed Secrets • Elastic-Stack (Elasticsearch, Kibana, Fluentd) • Prometheus, Grafana, Grafana Loki • Istio, Knative, Jaeger • Clair, Vault, Keycloak 6 // Cloud Native Summit Fall 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware
7. // Cloud Native Summit Fall 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware 7 https://en.wikipedia.org/wiki/Bus_factor
8. // Cloud Native Summit Fall 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware https://k3s.io https://microk8s.io 8 // Cloud Native Summit Fall 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware
9. // Cloud Native Summit Fall 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware 9 5 x Intel NUC i5 5 x Raspberry Pi 3 CoM miniNodes Carrier Board
10. // Cloud Native Summit Fall 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware MicroK8s - Zero-ops Kubernetes • Certified Kubernetes distribution. Backed by Canonical. • Pure upstream, no APIs added or removed. • A single package of K8s for 42 flavours of Linux. Uses multipass to run a local Ubuntu VM under Windows and Mac. • Made for developers. Runs on cloud, workstations, Edge and IoT. • Dozens of infrastructure add-ons: DNS, registry, dashboard, storage, RBAC, ingress, MetalLB, GPU, Istio, Linkerd, Knative, fluentd, Prometheus, Jaeger, Ambassador, Cilium, Helm, … • High Availability and Multi-node cluster configuration supported. 10
11. // Cloud Native Summit Fall 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware MicroK8s Demo MicroK8s Demo https://github.com/lreimer/lightweight-k8s
12. // Cloud Native Summit Fall 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware K3s - 5 less than K8s • Certified Kubernetes distribution. Backed by Rancher. • Legacy, alpha, non-default features are removed. • Suitable for Edge, IoT, ARM64, ARMv7, CI, Workstations and the Cloud • LoadBalancer support with Traefik based Ingress. • High Availability with an External DB or Embedded DB (experimental) • Easy to install, run and auto-update. Single < 40MB binary. • k3sup: from Zero to KUBECONFIG in < 1 min https://k3sup.dev/ 12
13. // Cloud Native Summit Fall 2020 // Running K8s on Workstation, Edge and IoT Devices // @LeanderReimer #cloudnativenerd #qaware K3s Demo https://github.com/lreimer/lightweight-k8s
14. Mario-Leander Reimer Chief Software Architect, QAware GmbH mario-leander.reimer@qaware.de https://www.qaware.de https://speakerdeck.com/lreimer/ https://github.com/lreimer/ &